Perhaps it will work again if you download Firefox ESR (52)? https://www.mozilla.org/en-US/firefox/organizations/all/

And turn off automatic updates if you don't want to get the broken version of Firefox again. Turning off automatic updates can be done in Tools->Options->Advanced->Update Or go to about:config and search for app.update.auto and turn it off.

History is gone.

https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data and https://support.mozilla.org/en-US/kb/recover-lost-or-missing-bookmarks and https://support.mozilla.org/en-US/kb/import-bookmarks-html-file plus https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer and https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles plus https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Please let us know if this solved your issue or if need further assistance.

Jodywatsonlund said

I hate this, where is my history, how do I get my old firefox back, where are my bookmarks

If it isn't fixed and in an easy way, I am done with Firefox! If it isn't broke, why fix it? Tired of BIG SHOTS changing things when they are working satisfactory!

If it isn't fixed and in an easy way, I am done with Firefox! If it isn't broke, why fix it? Tired of BIG SHOTS changing things when they are working satisfactory!

DITTO! How you can take a browser and totally destroy its usefulness is beyond me. After COUNTLESS years enjoying Firefox my productivity is down by 90%.

Congratulations!

Did MS take over?